wctype, iswctype: Add tests

[Bruno Haible]

Since fnmatch() relies on character classes, and I saw a test failure of
c32_apply_type_test on mingw, it's time to add unit tests for these
character class functions.


2023-07-25  Bruno Haible  <bruno@clisp.org>

        iswctype: Add tests.
        * tests/test-iswctype.c: New file, based on
        tests/test-c32_apply_type_test.c.
        * tests/test-c32_apply_type_test.c (main): Update accordingly.
        * modules/iswctype-tests: New file.

        wctype: Add tests.
        * tests/test-wctype.c: New file, based on
        tests/test-c32_get_type_test.c.
        * modules/wctype-tests: New file.

0001-wctype-Add-tests.patch
Description: Text Data

0002-iswctype-Add-tests.patch
Description: Text Data